Post on 02-Apr-2018
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Electricity GenerationWorld Facts
By itself, electricity is anexceptionally clean form of energy
but It is to be consider that how it isgenerated.
Today, worldwide, about 70%electricity is produced from fossilfuels (about 50% from coal, and 20%from natural gas).
Nuclear power accounts for another20%, leaving about 10% coming fromrenewable resources like wind, waterand solar.
50%
20%
20%10%
Power Generation
Coal
Natural Gas
N.PowerRenewable Sources
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HOW HYDROPOWER WORKS
Driven by the sun, water
circulates throughout the earth
through evaporation and
precipitation.
In this hydrologic cycle, water
evaporates from lakes and
oceans, forms clouds, falls to
the ground as rain or snow,
then finds its way back to the
ocean.
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Hydropower facilities generate
electricity by utilizing the energy
of falling water.
Hydroelectric plants can be built
along rivers, streams, or canals,
but dams are necessary for a
reliable water supply. A dam
creates a reservoir that stores
water which can be released
depending on the demand for
electricity.
Inside Hydropower Plant
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In this process electricity generated by themeans of burning fossil fuel and coal occurswhen they are burned at high temperature in afurnace that is known as the boiler. Water isrelease through the system in series of pipes,which is heated at extreme pressure and
temperature to produce steam. At this stage,the high-pressurized steam produce.
This process caused the fan to spin at highspeed at approximate 1,500 mph, which inturn caused a magnet within the rotor toproduce electricity.
Now that the electricity is produced, it movesfrom the power plant through a system oftransmission into our homes, offices anddevices. All alone this linear system ofelectricity production, about 20-30% of thetotal energy produced is lost in the form ofheat energy
HOW COAL POWER WORKS
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2. Hydroelectric power plants withaccumulation reservoirs offerincomparable operationalflexibility, since they can
immediately respond tofluctuations in the demand forelectricity.
The flexibility and storagecapacity of hydroelectric power
plants make them more efficientand economical in supporting theuse of intermittent sources ofrenewable energy, such as solarenergy or Aeolian energy.
Proses of Renewable Energy - Continue
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3. River water is a domesticresource which, contrary tofuel or natural gas, is notsubject to marketfluctuations.
In addition to this, it is theonly large renewable sourceof electricity and its cost-benefit ratio, efficiency,flexibility and reliability assistin optimizing the use ofthermal power plants.
Proses of Renewable Energy - Continue
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4. The hydroelectric life cycle
produces very small amounts of
greenhouse gases (GHG). In
emitting less GHG than power plants
driven by gas, coal or oil,
hydroelectricity can help retard
global warming.
Although only 33% of the available
hydroelectric potential has been
developed, today hydroelectricity
prevents the emission of GHG
corresponding to the burning of 4.4
million barrels of petroleum per day
worldwide.
Proses of Renewable Energy - Continue
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5. Hydroelectric power plants don't
release pollutants into the air. They
very frequently substitute the
generation from fossil fuels, thus
reducing acid rain and smog.
In addition to this, hydroelectric
developments don't generate toxic by
products.
Proses of Renewable Energy - Continue
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1. Burning fossil fuels releases
carbon dioxide (Co2), a powerful
greenhouse gas, that had been
stored in the earth for millions of
years, contributing to global
warming.
It leaves behind harmful
byproducts upon combustion,
thereby causing a lot of pollution.
Mining of coal leads to irreversible
damage to the adjoining
environment.
Cons of Non-renewable (Coal Power) Energy
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5. Coal is cheap and abundant, with anestimate of over 300 years supply ofeconomic coal deposits stillaccessible, which is why we are stillusing so much of it, despite the highlevels of pollution and greenhouse gasemissions it produces.
In the US, studies have revealed thatnearly 24,000 early deaths werereported due to the harmful emissions
from coal-fired power plants.
Causes of deaths include lung cancer,asthma attacks, and heart attacks.
Cons of Non-renewable (Coal Power) Energy
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Thank You